From a5ccb974f52a41068be14395c7bb613893d4af38 Mon Sep 17 00:00:00 2001
From: wintrics <wintrics@gmail.com>
Date: Tue, 10 Mar 2026 09:05:15 +0000
Subject: [PATCH] Fix fullscreen mode on Android 11+ where navigation bar was
 not hidden

---
 .../java/com/termux/app/TermuxActivity.java   | 23 ++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/com/termux/app/TermuxActivity.java b/app/src/main/java/com/termux/app/TermuxActivity.java
index 0c9f74125b..79612cd6fb 100644
--- a/app/src/main/java/com/termux/app/TermuxActivity.java
+++ b/app/src/main/java/com/termux/app/TermuxActivity.java
@@ -10,6 +10,7 @@
 import android.content.IntentFilter;
 import android.content.ServiceConnection;
 import android.net.Uri;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.view.ContextMenu;
@@ -193,6 +194,12 @@ public final class TermuxActivity extends AppCompatActivity implements ServiceCo
     private static final String ARG_ACTIVITY_RECREATED = "activity_recreated";
 
     private static final String LOG_TAG = "TermuxActivity";
+    private static final int FULLSCREEN_UI_FLAGS = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+        | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+        | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+        | View.SYSTEM_UI_FLAG_FULLSCREEN
+        | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -238,7 +245,7 @@ public void onCreate(Bundle savedInstanceState) {
         });
 
         if (mProperties.isUsingFullScreen()) {
-            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+            enableFullScreenMode();
         }
 
         setTermuxTerminalViewAndClients();
@@ -322,6 +329,14 @@ public void onResume() {
         mIsOnResumeAfterOnCreate = false;
     }
 
+    @Override
+    public void onWindowFocusChanged(boolean hasFocus) {
+        super.onWindowFocusChanged(hasFocus);
+
+        if (hasFocus && mProperties != null && mProperties.isUsingFullScreen())
+            enableFullScreenMode();
+    }
+
     @Override
     protected void onStop() {
         super.onStop();
@@ -449,6 +464,12 @@ private void reloadProperties() {
             mTermuxTerminalViewClient.onReloadProperties();
     }
 
+    private void enableFullScreenMode() {
+        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
+            getWindow().getDecorView().setSystemUiVisibility(FULLSCREEN_UI_FLAGS);
+    }
+
 
 
     private void setActivityTheme() {